Systems and Methods for Determining State of Battery Charge in a Host
First Claim
1. A method comprising:
- determining an internal resistance of a battery;
determining an initial current, I0, upon insertion of the battery;
determining a state of charge for the battery using the internal resistance of the battery and the initial current; and
reporting the state of charge.
2 Assignments
0 Petitions
Accused Products
Abstract
A processor executes a program to calculate values of the internal resistance R of a battery and updates a database of parameters defining the dependence of internal resistance on the battery state of charge (SOC) and temperature. The database is utilized to obtain the information needed to make accurate remaining run-time calculations. The processor may also execute a program to effectuate entry of a database into memory representative of characteristics of the battery including values of measured open circuit voltages (OCV) of the battery and determinations of “starting SOC” values that correspond to the most recently measured values of OCV after the battery has stabilized. The processor may also execute programs to determine the present SOC of the battery, the present battery capacity, and the remaining run-time of the device powered by the battery.
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Citations
20 Claims
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1. A method comprising:
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determining an internal resistance of a battery; determining an initial current, I0, upon insertion of the battery; determining a state of charge for the battery using the internal resistance of the battery and the initial current; and reporting the state of charge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system comprising:
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a processor configured to; determine an internal resistance of a battery; determine an initial current upon insertion of the battery, I0; determine a state of charge for the battery using the internal resistance of the battery and the initial current; and report the state of charge. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A system comprising:
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means for determining an internal resistance of a battery; means for determining an initial current upon insertion of the battery, I0; means for determining a state of charge for the battery using the internal resistance of the battery and the initial current; and means for reporting the state of charge. - View Dependent Claims (20)
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Specification